Improvement in machines for turning selvages in cloth



' 5 Sheets-Sheet 1. J. T. BOYD. v

Machine for Turning Selvages in Cloth. No. 20,695. Patented June 29,1858.

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5 Sheets-Sheet 2.

J. T. BOYD.

Machine 'fm' Turning Selvages in Cloth.

Patented June 29, 1858'.

5 Sheets-Sheet 3. J. T. BOYD.

Machine for Turning Selva'ges in Clo th.

Patented- June 29, 1858.

5 Sheets- Sheet 4. J. T. BOYD.

Machine for Turning, Selvages in Cloth,

Patented June 29, 1858.

5 Sh t-Sh t 5. J. T. BOYD. 88

Machine for. Turning Selvages in Cloth.

Patented June'29, 1858.

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UNITED STATES PATENT OFF CE.

JOHN T. BOYD, or OHARLESTOWN, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR TURNING SELVAGES IN CLOTH.

. Specification forming part of Letters Patent No. 20.695, dated June 29, 1858.

I To all whom, it may concern.-

Be it known that I, J OHNT. BOYD, of Charles town, in the county of Middlesex and State of Massachusetts, have invented a new and useful Machine for Turning the Selvage of Canvas or a Broad Strip of Cloth; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying ,drawings, of which Figure 1 denotes a top view of such machine;-Fig. 2, a sideor front elevation of it; Fig. 3, an elevation of its rear end; Fig. 4, a view of the upper side of what is termed its shoe or turning-cam; Fig. 5, a rear elevation of the said shoe; Fig. 6, an under side view of it; Fig. 7, a front elevation of it,- Fig. 8, a side view of the creasing or'bending roller and its fixture or supporters; Fig. 9, a top view of the said bending-roller and its fixture or supporters.

The object of my invention is to facilitate the construction of sails for vessels, or, in other words, to prepare for being sewed the canvas of which they are composed, by turning down its selvage or edgein an expeditious and perfect manner.

In the drawings, A denotes the frame or table of the machine, as constructed, with a stationary ledge or guide, B, arranged on andprojecting above the top surface of such table, as shown in Figs. 1 and 3. Besides this guide B, there is another adjustable guide, 0, which is so applied to the table as to be capable of being moved either toward or away from the guide B, and fixed in position on the top surface of the table by set-screws or other equivalent devices. The arrangement of the guide 0 with respect to the guide B is as shown in Figs. 1 and 3. The object of having the guide 0 adjustable with respect to the guide B is to enable the said guide 0 to be set in a proper position according to the width of the strip of canvas to be operated upon. A creasing or bevel roller, 0, is placed against the guide B,

' as shown in Figs. 1 and 3, it being suitably supported by such devices as will admit of its being drawn or made to press close into the angle formed between the top of the table and the inner edge of the guide B.

In front of the roller is a turning-cam or shoe, I), this cam on its front part having a form somewhat analogous to one side of a bow of a ship. The cam or shoe 1) is arranged above the table a distance about twice the thickness of the canvas, and is placed close against the inner edge of the guide B.

Directly in front of the said'cam b a flattening or pressing roller, a, is arranged, as shown in the drawings, such roller being carried by a lever, h, held in position by set-screws i i against a vertical plate, 70, arranged as shown in Figs. 1, 2, and 3. such plate being furnished with curved slots Zm, (see Fig. 2,) for the reception of the screws and to allow of the adjustment of the roller a at such distance above the table as may be necessary.

In front of the aforesaid machinery, and on the front end of the machine, are a pair of draft-rollers, f f, the Same being arranged as shown in the drawings. Their purpose is to draw the cloth through the selvage-turning mechanism.

Directly over the table is a press-board, d, which is arranged between the guides B and O, and borne downward by a set-screw, E, ex

tending through a spring or arm, m.

, In operating with the above-described ma chine the guides B and G are to be placed at a distance apart from one another equal to the width of the piece of cloth whose edge is to be turned, less the width of the margin that is to be turned over by the machinery. Under this state of things the cloth is to be introduced between the guides B and O, and so as to rest on the top surface of the table A and be pressed downward thereon by the press-board d, the end of the cloth being carried between the draft-rollers ff, which should grasp it firmly. Now, if the cloth be drawn along by and in a direction toward the rollers f f, the action of the creasing-roller c, the shoe 1), and the flattening-roller a upon it will be such as to turn over and press down the selvage. Furthermore, the press-board serves to prevent the cloth from wrinkling and to keep in their normal positions those of its filling-threads which may be under Such board and be moving forward under the draft of the rollers f f.

I claim 1. A combination of the following devices, (or their mechanical equivalents,) viz: one or more guiding-ledges, B O, a bending or creasboard d, arranged with respect to the table and the said devices for turning and pressing the selvage of the cloth, substantially in man 'ner and so as to operate on the cloth as spec/L fied.

In testimony \VllGlGO'f I have hereunto set my signature.

JOHN T. BOYD.

' \Vitnesses:

R. H. EDDY, F. P. HALE, Jr. 

